JP2014127359A - Electric connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric connector capable of expanding a function of a jack such as an earphone jack in comparison with prior arts.SOLUTION: A jack body 1 is covered with a jack cover 2. A plurality of conducting paths 21 are provided in the jack cover 2. A contact point part 21a of the conducting paths 21 are arrayed on the front surface of the jack cover 2 so as to surround a plug insertion hole 20 and faces the front. A communication part 21b extends to the inner surface of the jack cover 2 through the inner surface (inner edge) of the plug insertion hole 20 from the contact point part 21a and comes into contact with terminals 3 retained by the jack cover 2.

Description

  The present invention relates to an electrical connector into which a plug such as an earphone plug is inserted.

  In mobile devices such as smartphones, multifunctionalization has progressed, and various external device connection ports such as memory card insertion holes, USB connection ports, and earphone jacks are required. On the other hand, in a portable device, in addition to being multifunctional, high design is also an important factor.

JP 2001-217053 A

  Although providing a lot of external device connection ports in a portable device is advantageous for multi-functionality, there is a problem that it hinders the pursuit of design. Therefore, for example, if the function of the earphone jack is expanded to enable digital signal transmission, the number of external device connection ports can be reduced.

  The present invention has been made in view of such a situation, and an object of the present invention is to provide an electrical connector capable of expanding the function of a jack such as an earphone jack as compared with the prior art.

  One embodiment of the present invention is an electrical connector. The electrical connector includes a jack body and a jack cover that covers at least a portion of the jack body except for a plug insertion hole, and the jack cover is provided with a plurality of conductive paths, and each conductive path includes the plug It has a contact portion that is provided around the insertion hole and faces forward, and can be electrically connected to the conductor portion on the substrate side.

  A plurality of terminals for mounting on a board may be provided, and each conductive path may have a terminal connection part electrically connected to the terminal and a communication part extending from the contact part to the terminal connection part.

  The terminal connecting portion may be provided on the inner surface of the jack cover, and the connecting portion may extend from the contact portion to the inner surface of the jack cover.

  The plurality of terminals may be respectively held in a plurality of recesses provided on an inner surface of the jack cover, and the terminal connection portion may be provided in the recess.

  The plurality of terminals may be held by the jack body.

  Each of the plurality of conductive paths may be a plating film.

  A shield conductor may be provided on the outer surface of the jack cover.

  It should be noted that any combination of the above-described constituent elements, and those obtained by converting the expression of the present invention between methods and systems are also effective as aspects of the present invention.

  ADVANTAGE OF THE INVENTION According to this invention, the electrical connector which can expand functions of jacks, such as an earphone jack, compared with the past can be provided.

1 is an exploded perspective view of an electrical connector according to Embodiment 1 of the present invention. The upper perspective view of the said electrical connector. The lower perspective view of the said electrical connector. The 1st perspective view of the jack cover 2 of the said electrical connector. FIG. 3 is a second perspective view of the jack cover 2. The perspective view of the terminal 3 of the said electrical connector. The perspective view of the state which attached the terminal 3 to the jack cover 2. FIG. The perspective view of the 4 pole plug 5 insertable in the said electrical connector. The perspective view of the multipolar plug 6 which can be inserted in the said electrical connector. Installation explanatory drawing of the electrical connector on the substrate 4. The exploded upper perspective view of the electrical connector which concerns on Embodiment 2 of this invention. The disassembled lower perspective view of the electrical connector.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. In addition, the same code | symbol is attached | subjected to the same or equivalent component, member, etc. which are shown by each drawing, and the overlapping description is abbreviate | omitted suitably. In addition, the embodiments do not limit the invention but are exemplifications, and all features and combinations thereof described in the embodiments are not necessarily essential to the invention.

Embodiment 1
FIG. 1 is an exploded perspective view of the electrical connector according to Embodiment 1 of the present invention. FIG. 2 is a top perspective view of the electrical connector. FIG. 3 is a lower perspective view of the same. FIG. 4 is a first perspective view of the jack cover 2 of the electrical connector. FIG. 5 is a second perspective view of the same. FIG. 6 is a perspective view of the terminal 3 of the electrical connector. FIG. 7 is a perspective view of the jack cover 2 with the terminals 3 attached. FIG. 8 is a perspective view of the four-pole plug 5 that can be inserted into the electrical connector. FIG. 9 is a perspective view of the multipolar plug 6 that can be inserted into the electrical connector. FIG. 10 is an explanatory diagram of mounting the electrical connector on the board 4.

  The electrical connector according to the present embodiment includes a jack body 1, a jack cover 2, and a plurality of terminals 3. In the illustrated example, there are six terminals 3. The jack body 1 has a configuration equivalent to an existing four-pole jack (for example, an earphone jack). The jack cover 2 is, for example, a rectangular parallelepiped insulating resin molding having an open bottom, and covers the jack body 1 while holding the terminals 3. The mutual holding structure of the jack body 1 and the jack cover 2 is, for example, press-fitting or fitting, but is not particularly limited. In addition to the six terminals 3, the electrical connector is provided with five terminals 9 as shown in FIG. A terminal 9 is a terminal of the jack body 1. A plug insertion hole 20 is opened in the front surface of the jack cover 2. Even if the plug insertion hole 10 of the jack body 1 and the plug insertion hole 20 of the jack cover 2 communicate with each other and the jack cover 2 is covered with the jack body 1, the conventional four-pole plug 5 (for example, an earphone plug) shown in FIG. Can be plugged in.

  The jack cover 2 is provided with a plurality of conductive paths 21. The number of conductive paths 21 is six in the illustrated example. Each conductive path 21 includes a contact portion 21a, a connecting portion 21b, and a terminal contact portion 21c (terminal connection portion). The contact portion 21 a is arranged on the front surface of the jack cover 2 so as to surround the plug insertion hole 20 and faces forward. As shown in FIGS. 1, 4 and 5, the connecting portion 21b extends from the contact portion 21a to the inner surface of the jack cover 2 via the inner surface (inner edge) of the plug insertion hole 20, and reaches the terminal contact portion 21c. The same number of recesses 22 as the terminals 3 are provided on the left and right inner surfaces of the jack cover 2, and the terminal contact portion 21 c is provided in the recess 22.

  Each conductive path 21 is preferably a plated film, and is formed by forming nickel plating on the underlying copper plating. Specifically, first, after electroless copper plating is formed on the entire surface of the jack cover 2, a portion to be left as a conductive path is covered with a resist (protective film). Then, the copper plating other than the covered portion is removed, and electroless nickel plating is formed on the remaining copper plating. A shield conductor is preferably provided on the outer surface of the jack cover 2, and the conductor may be formed as a plating film together with the formation of the conductive path 21.

  The terminal 3 is a conductor such as a metal plate, and includes a body part 30 and leg parts 32 as shown in FIG. A convex portion 31 is provided on the body portion 30. The body portion 30 is fitted (press-fitted) into the concave portion 22 shown in FIGS. The leg portion 32 is bent from the base end of the body portion 30 and extends to the outside of the jack cover 2. As shown in FIG. 10, the leg portion 32 is a connection portion with the conductor portion 8 (electrode portion) on the substrate 4 and is electrically connected to the conductor portion 8 by soldering or the like. Similarly, the five terminals 9 shown in FIG. 3 are also electrically connected to the conductor portion 8 by soldering or the like. Thereby, the electrical connector of the present embodiment is electrically connected to a circuit pattern (not shown) of the substrate 4.

  The electrical connector of this embodiment functions as a normal 4-pole jack when the normal 4-pole plug 5 shown in FIG. 8 is inserted, and a multi-pole plug 6 (10-pole plug) as shown in FIG. 9 is inserted. In this case, it functions as a multi-pole jack (10-pole jack). The multipolar plug 6 includes six terminal pins 7 protruding in the same direction as the insertion portion 11 in addition to the insertion portion 11 similar to the four-pole plug 5. When the multipolar plug 6 is inserted into the electrical connector of the present embodiment, the tip of the terminal pin 7 comes into contact with the contact portion 21 a of the jack cover 2. The terminal pin 7 is slidable in the axial direction and biased in the protruding direction by a spring (not shown). When used as a multi-pole jack, digital signals can be transmitted at high speed.

  According to the present embodiment, the jack cover 2 is put on the jack body 1 having the same configuration as the existing four-pole jack, so that when a multi-pole plug 6 as shown in FIG. It becomes possible. Note that impedance matching is required for high-speed transmission of digital signals, and it is necessary to provide a certain characteristic impedance (for example, 50Ω) to the portion constituting the transmission line of the connector. In the present embodiment, the conductive path 21 is made of a plating film, so that the width and thickness of the conductive path can be reduced as compared with, for example, a case where a metal plate forms a conductive path for signals. A characteristic impedance necessary for high-speed transmission (characteristic impedance as a transmission line) can be secured and impedance matching can be achieved. For this reason, in addition to the transmission of the analog audio signal (stereo signal) when the existing four-pole plug 5 is inserted, the digital signal can be transmitted at a high speed by inserting the multi-pole plug 6. It can also contribute to the reduction of external connection terminals.

Embodiment 2
FIG. 11 is an exploded top perspective view of the electrical connector according to Embodiment 2 of the present invention. FIG. 12 is an exploded lower perspective view of the same. The electrical connector of the present embodiment is different from that of the first embodiment, and the connecting portion 21b of the conductive path 21 extends to the inner surface of the jack cover 2 through the inner surface of the through hole 23 on the front surface of the jack cover 2, and is connected to the terminal. It reaches the contact portion 21c. The terminal 3 is provided in the jack body 1 by press fitting or the like. In this case, the terminal 3 and the terminal contact portion 21 c come into contact with each other by covering the jack body 1 with the jack cover 2. The jack body 1 has a base portion 12 that spreads to the left and right and a pair of claws 13 that rise from the base portion 12. The claw 13 engages with the recess 24 of the jack cover 2 to lock the jack cover 2. Other points of the present embodiment are the same as those of the first embodiment. The present embodiment can achieve the same effects as those of the first embodiment.

  The present invention has been described above by taking the embodiment as an example. However, it is understood by those skilled in the art that various modifications can be made to each component and each processing process of the embodiment within the scope of the claims. By the way. Hereinafter, modifications will be described.

  Instead of using the terminal 3 for electrical connection between the terminal contact portion 21 c of the conductive path 21 and the conductor portion 8 on the substrate 4, the terminal contact portion 21 c extends to the vicinity of the lower end portion of the jack cover 2 to be a terminal. The contact portion 21 c may be electrically connected to the conductor portion 8 on the substrate 4 by direct soldering or the like without using the terminal 3.

1 jack body, 2 jack cover, 3 terminals, 4 board, 5 4 pole plug, 6 multipolar plug, 7 terminal pin, 8 conductor part, 9 terminal, 10 plug insertion hole, 11 insertion part, 12 base part, 13 claw, 20 plug insertion hole, 21 conductive path, 21a contact part, 21b contact part, 21c terminal contact part, 22 recess, 23 through hole, 24 recess, 30 body part, 31 convex part, 32 leg part

Claims (7)

  A jack main body and a jack cover that covers at least a portion of the jack main body excluding the plug insertion hole, wherein the jack cover is provided with a plurality of conductive paths, and each conductive path is provided around the plug insertion hole. An electrical connector that has a contact portion that faces the front and is electrically connectable to a conductor portion on the board side.   2. The device according to claim 1, comprising a plurality of terminals for mounting on a board, wherein each conductive path has a terminal connection part electrically connected to the terminal and a communication part extending from the contact part to the terminal connection part. Electrical connector as described.   The electrical connector according to claim 2, wherein the terminal connection portion is provided on an inner surface of the jack cover, and the communication portion extends from the contact portion to an inner surface of the jack cover.   The electrical connector according to claim 2, wherein the plurality of terminals are respectively held in a plurality of recesses provided on an inner surface of the jack cover, and the terminal connection portion is provided in the recess.   The electrical connector according to claim 2 or 3, wherein the plurality of terminals are held by the jack body.   The electrical connector according to any one of claims 1 to 5, wherein each of the plurality of conductive paths is a plating film.   The electrical connector according to any one of claims 1 to 6, wherein a conductor for shielding is provided on an outer surface of the jack cover.

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